Cruise reports from the marine monitoring

Reports from SMHI's regular marine monitoring programme. Data presented in the reports have been subject to preliminary quality control procedures only.

Cruise report from R/V Aranda week 42, 2019

The surface temperature was normal for the season and varied between 10-14 ° C, much colder than in the previous expedition in September. A thermocline still existed in the Baltic Sea at about 30 m depth, about 15 m depth in the Kattegat and in the Skagerrack almost no thermocline was left. The …

 
Type: Report
Author: Lena Viktorsson
Published: Oct, 2019
Published: Last updated:

Cruise report from R/V Aranda week 37-38, 2019

The surface temperature was normal for the season and varied between 14.5 - 17.5 ° C in the upper water mass. In the Baltic, there was a strong thermocline throughout the area, usually at about 30 meters depth with cold underlying water, in the Kattegat the temperature in the underlying water was …

 
Type: Report
Author: Örjan Bäck
Published: Oct, 2019
Published: Last updated:

Cruise report from R/V Aranda week 33-34, 2019

The surface temperature was normal for the season and varied between 17-19 °C. Windy weather had mixed the warmer surface water in Skagerrak down to 60 meters and the thermocline was partly broken or deeper. The thermocline was observed at 15-20 meters in the rest of the area.
 
The nutrient …

 
Type: Report
Author: Karin Wesslander
Published: Aug, 2019
Published: Last updated:

Cruise report from R/V Aranda week 29, 2019

During the expedition, which is part of the Swedish national marine monitoring program, Skagerrak, Kattegat, Öresund, the Baltic Proper, was visited. The weather was sunny and mostly calm. Several surface accumulations of cyanobacteria were observed in the Baltic Sea. During the expedition, live …

 
Type: Report
Author: Lena Viktorsson
Published: Jul, 2019
Published: Last updated:

Cruise report from R/V Aranda week 19-20, 2019

The sea surface temperature and salinity was normal in all sea areas, except the surface salinity that was above normal in parts of the Skagerrak, in the Eastern Gotland Basin and in the Hanö Bight. The deep water in parts of the Baltic Proper showed temperature and salinity above or high above …

 
Type: Report
Author: Martin Hansson
Published: Jul, 2019
Published: Last updated:

Cruise report from R/V Aranda week 24, 2019

The cruise in June, which is part of the Swedish national marine monitoring program, covered the Skagerrak, the Kattegat, the Sound and the Baltic Proper. The sea surface temperatures and salinities were normal in all sea areas. The spring bloom had consumed the majority of the nutrients in the …

 
Type: Report
Author: Anna-Kerstin Thell
Published: Jun, 2019
Published: Last updated:

Cruise report from R/V Aranda week 11, 2019

The entire water column was generally well mixed in the Skagerrak area, which resulted in higher than normal salinity and temperature in the surface waters. At Å17 a weak stratification could be seen at around 30 meters, with somewhat colder and less salty water in the surface layer. The nutrient …

 
Type: Report
Author: Örjan Bäck
Published: May, 2019
Published: Last updated:

Cruise report from R/V Aranda week 14-15, 2019

The sea surface temperature was between 2.9–6.5 ºC, coldest in the northern parts of the Baltic Proper and warmest in Skagerrak and Kattegat. The sea surface salinity was as highest 30.5 in the open Skagerrak and as lowest 6.8 in the Baltic Proper and the salinity was above normal at some stations …

 
Type: Report
Author: Karin Wesslander
Published: Apr, 2019
Published: Last updated:

Cruise report from R/V Aranda week 38-39, 2018

The cruise was initially delayed for some hours, and there were some problems with the generators resulting in inability to maintain full speed of the vessel during the cruise. Shortly before arriving Lysekil, information was given stating that other bookings of R/V Aranda had priority, and the …

 
Type: Report
Author: Johan Kronsell
Published: Mar, 2019
Published: Last updated:

Cruise report from R/V Aranda week 45-46, 2018

In large parts of the deep water in the Baltic Proper the oxygen concentration was close to zero. Anoxic conditions, when hydrogen sulphide can form, were found in both the Western and the Eastern Gotland Basin from 80-90 meters depth. In the Bornholm Basin the oxygen concentration went down to 0.4 …

 
Type: Report
Author: Johan Kronsell
Published: Mar, 2019
Published: Last updated:
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